jminusminus

Class JStatementExpression

java.lang.Object

jminusminus.JAST

jminusminus.JStatement

jminusminus.JStatementExpression

 class JStatementExpression
extends JStatement

The AST node for an expression that appears as a statement. Only the expressions that have a side-effect are valid statement expressions.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) JExpression	expr The expression.

Fields inherited from class jminusminus.JAST

compilationUnit, line

Constructor Summary

Constructors

Constructor and Description
JStatementExpression(int line, JExpression expr) Construct an AST node for a statement expression given its line number, and expression.

Method Summary

Methods

Modifier and Type	Method and Description
JStatement	analyze(Context context) Analysis involves analyzing the encapsulated expression if indeed it is a statement expression, i.e., one with a side effect.
void	codegen(CLEmitter output) Generating code for the statement expression involves simply generating code for the encapsulated expression.
void	writeToStdOut(PrettyPrinter p) Write the information pertaining to this AST to STDOUT.

Methods inherited from class jminusminus.JAST

line, partialCodegen

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

expr

JExpression expr

The expression.

Constructor Detail

JStatementExpression

public JStatementExpression(int line,
                    JExpression expr)

Construct an AST node for a statement expression given its line number, and expression.

Parameters:

line - line in which the expression occurs in the source file.

expr - the expression.

Method Detail

analyze

public JStatement analyze(Context context)

Analysis involves analyzing the encapsulated expression if indeed it is a statement expression, i.e., one with a side effect.

Specified by:

analyze in class JAST

Parameters:

context - context in which names are resolved.

Returns:

the analyzed (and possibly rewritten) AST subtree.

codegen

public void codegen(CLEmitter output)

Generating code for the statement expression involves simply generating code for the encapsulated expression.

Specified by:

codegen in class JAST

Parameters:

output - the code emitter (basically an abstraction for producing the .class file).

writeToStdOut

public void writeToStdOut(PrettyPrinter p)

Description copied from class: JAST

Write the information pertaining to this AST to STDOUT.

Specified by:

writeToStdOut in class JAST

Parameters:

p - for pretty printing with indentation.